My New SAMSUNG PHONE D780 DUOS

Ya! the phone is good no doubt, but I just bought mine and I do not know how to REGISTER THE SECOND SIM,
secondly, I do not know how to SET THE VIBRATION if it has.All this was so because the manuals that came with it were all written in other language and not English.While the CD is not explanatory enough.Please what do I do now?

Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.

You need to flash it for what purpose,?You need to flash it to reset to original settings or security lock hang purpose?You can flash using software for that purpose,If you need to unlock it from Network lock using Flash method?You can use the Unlock code,that is best than software flash,.Get the Unlock code from hereOnlinegsmunlock.com and unlock it from Network Lock.Then you can use any GSM Network Sim card in the Phone....It's best for Unlock.....you can use the Flash software for De-brand the Phone also Removing Logo,Settings etc from previous provider...after unlock it de-brand will be Done.

Use the instructions below to Unlock it from Network lock step by step:

My Dear Brother:
First All Check:1.Confirm whether same sim card is working in other h.s or not.2.Make sure the sim slot is o.k. only try these two.3.If all the above steps fails, check the SIM card connector pins for damage.if so try to get serviced. 4.if ur sim card is good then it is problum form sim card ic u have u raplace it with SMD.u can make it jumper mean u can fix this prob with out sim card is for this contact.5.take sim connector slight up by pin then cheak by inserting sim.6.hot air gun on sim i.c. then cheak it.Last Option:IF make sure that the sim card hasn't been damamged at all sO Please You Go to Service& Sim Office and Get the Duplicate Sim Same Your No From Office OpratorProblem will Solved Quickly

See if you can make a call. If not, it's quite likely you've simply run out of credit, or the D780 is not compatible with your SIM.

Send SMS to a different number, maybe you've got the number wrong?

Use your SIM on another phone. If it works, then your phone's faulty, and you should go to a service centre and get it fixed. If you bought it from a store, you should have it covered under warranty. If the SIM doesn't work on the other phone, then your SIM's faulty, and you may need to get it replaced.

1. First do a CUSTOM reset: *2767*2878# (star 2767 star 2878 hash) turn off the phone 2. take out the battery and sim and put wrong network SIM and insert a half of it, so it won't ask for network password and shows "Insert SIM" message. Now put the battery ,and switch the phone on .(phone shows "Insert SIM" message.) 3.With out turn off the phone push the sim fully in. At this stage the phone is still asking to "Insert SIM" 4. Make a FULL reset by typing: *2767*3855#(star 2767 star 3855 hash) 5. The phone should reboot working with "wrong" sim inside. 6. Make a Change the NCK password to 8 zeros by typing: *7465625*638*00000000*00000000#(star 7465625 star 638 star 8zeros star 8zeros hash) 7. Now Disable network lock By typing: #7465625*638*00000000#(hash 7465625 star 638 star 8zeros hash) Phone is unlocked (check with *#7465625#)

O.K. it sounds like to me that it could be one of three problems, let's start here, first depending on where you live, your phone could have been "cloned", contact Samsung Customer service,and talk to tech from another phone,and keep that one handy, second, see if it just needs to be rebooted, just like computers phones hang up too. and third, did you put in any kind of memory chip, or anything like that,cause it maybe the wrong type, try these and let me know if it got ya fixed, if not please let me know, and Ill help you all I can, God bless

Yesterday I also got the same problem on Samsung DUOS SGH-D780!I found temporary solution how to drop this error message and run the phone normally, but after next reboot it often become again. I will ask Samsung tech. support about this, but now here is the emergency solution:

1. Turn OFF the phone (by removing the battery)2. Move out all the SIM cards from the phone3. Insert the battery again (BUT DON'T TURN ON THE PHONE, just insert the battery)4. Insert a charging cable into the phone and insert the adapter in wall outlet

(then I see the loading screen for the short time and after that CHARGING icon appears)

5. After that turn ON the phone. It will start in no-sim mode.6. Turn OFF the phone7. Remove battery, insert SIM-cards, insert the battery.8. Turn ON the phone